AD log files to another drive

Restart the domain controller (DC).
Press F8 at the Startup menu when the system displays the list of OSs.
Select Directory Services Restore Mode.
Select the appropriate installation, if more than one exists, and then log on as an administrator at the logon prompt.
Start a command prompt (Start, Run, cmd.exe).
Start the NTDS utility, ntdsutil.exe.
At the ntdsutil prompt, type “files” as shown below: